OVER 10 MONTHS, she was caned, barred from using the toilet, forced to eat her own vomit and warned that her relatives could be killed if she complained. It was a life Moe Moe Than, 32, a domestic worker from Myanmar, never imagined when she arrived in Singapore in 2012.Last week, her Singaporean employers, a married couple with three children, were sent to prison – one for almost four years, the other for two years. They are also facing prison time for abusing an Indonesian helper who worked…